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English: Postoperative X-ray of normal knee prosthesis of a 73 year old man who had osteoarthritis.Lateral view. It shows the following measurements used for post-operative evaluation:
An accessory navicular bone is an accessory bone of the foot that occasionally develops abnormally in front of the ankle towards the inside of the foot. This bone may be present in approximately 2-21% of the general population and is usually asymptomatic. [1] [2] [3] When it is symptomatic, surgery may be necessary.
Projectional radiography, also known as conventional radiography, [1] is a form of radiography and medical imaging that produces two-dimensional images by X-ray radiation.The image acquisition is generally performed by radiographers, and the images are often examined by radiologists.
The Angle of Gissane, or "Critical Angle", is the angle formed by the downward and upward slopes of the calcaneal superior surface. On a lateral radiograph, an angle of Gissane > 130° suggests fracture of the posterior subtalar joint surface. Böhler's angle, or the "Tuber Angle", is another normal anatomic landmark seen in lateral radiographs.
There are three x-ray views in a complete ankle series: anteroposterior (AP), lateral, and oblique (or "mortise view"). The mortise view is an AP x-ray taken with the ankle internally rotated 15-20 degrees since the foot is naturally externally rotated relative to the ankle. [9]
Calcaneal spurs are typically detected by x-ray examination. [2] It is a form of exostosis. When a foot is exposed to constant stress, calcium deposits build up on the bottom of the heel bone. Generally, this has no effect on a person's daily life.
Date: 29 March 2019: Source: Own work: Author: Mikael Häggström, M.D. Author info - Reusing images - Conflicts of interest: None Mikael Häggström, M.D. Consent note: Written informed consent was obtained from the individual, including online publication.
Loss of this concavity or bone bulging may lead to cam type impingement. The degree of this deformity can be measured by the alpha angle. Although it can be measured in the cross-lateral view, the 45° Dunn view is considered more sensitive and the frog leg view more specific in determining pathologic values. Normal: ≤68° in men, ≤50° in ...